Offshore Field Development Projects
Sleipner Area Sleipner
Operator:Statoil
Water Depth:80 m / 264 ft
Region:Europe - North Sea
Country:Norway
Last Updated:Apr 10, 2014    (view update history)
Project Description
Located in the middle of the North Sea, near the border between the United Kingdom and Norway, is the Sleipner project, roughly 149 miles (240 kilometers) west of Stavanger, Norway. The Sleipner project includes two main fields, Sleipner East and Sleipner West, and six satellite fields, Gungne, Loke, Alpha North, Sigyn, Volve and Volve South, tied-back to Sleipner A, a fixed platform.

Other infrastructures included in the project are Sleipner T, a gas treatment platform; Sleipner B, an unmanned wellhead platform; Sleipner Riser, a riser platform; and Sleipner F, a flare stack.

The second largest gas development in the North Sea, the Sleipner area has produced 1.8 Bboe since 1993, and has remained a prolific gas hub since its inception because of upgrading, and ...
Located in the middle of the North Sea, near the border between the United Kingdom and Norway, is the Sleipner project, roughly 149 miles (240 kilometers) west of Stavanger, Norway. The Sleipner project includes two main fields, Sleipner East and Sleipner West, and six satellite fields, Gungne, Loke, Alpha North, Sigyn, Volve and Volve South, tied-back to Sleipner A, a fixed platform.

Other infrastructures included in the project are Sleipner T, a gas treatment platform; Sleipner B, an unmanned wellhead platform; Sleipner Riser, a riser platform; and Sleipner F, a flare stack.

The second largest gas development in the North Sea, the Sleipner area has produced 1.8 Bboe since 1993, and has remained a prolific gas hub since its inception because of upgrading, and tie-ins of satellite fields.

The project supplies a large amount of gas to Europe and functions as a hub for a number of pipelines transferring gas from the north to the south area of the North Sea.

Sleipner East

The Sleipner East gas field is located on Block 15/9 in the North Sea, and is situated in a water depth of 269 feet (82 meters). Statoil operates the field and owns 59.6% interest; ExxonMobil Norge owns 30.4%; and Total E&P Norge owns the remaining 10%.

Sleipner's reservoir depth is 656 to 984 feet (200 to 300 meters) and contains sandstones in the Ty and Hugin formation, which are Paleocene and Jurassic in age. It was deemed necessary to produce from the Hugin reservoir using pressure depletion, and to produce from the Ty reservoir by dry gas recycling, until October 2005. Currently, the wells are produced with a reduced inlet pressure.

The field was discovered in 1981, received government approval for field development on Aug. 8, 1995, and commenced production on June 6, 1998.

Sleipner West

Located on Blocks 15/6 and 15/9, the Sleipner West field is the largest gas field in the Sleipner area, and is situated in a water depth of 361 feet (110 meters). Statoil operates the project and owns 58.34% interest; ExxonMobil Norge owns 32.23% interest; and Total E&P Norge owns the remaining 9.41% interest.

Sleipner West's reservoir, about 984 to 1,476 feet (300 to 450 meters) deep, contains sandstones in the Hugin formation, which are Middle Jurassic in age, and are recovered by pressure depletion.

The field was discovered in 1974, received government approval for field development in 1992, and commenced production on Aug. 29, 1996.

Field Development

The Sleipner area was developed in four phases with the first phase focusing on the Sleipner East section of the project.

Phase 1

The first phase of the Sleipner development was divided in two sections, allowing production from a section of the project to commence while the field was still being developed.

Phase 1 A of development consisted of installing a production, drilling and living quarters' platform, Sleipner A, on the Sleipner East field, and developing two subsea templates tied-back to the platform.

The Sleipner A fixed platform is linked by a bridge to a gas treatment platform, Sleipner T. Sleipner Riser, a riser platform, connects Sleipner A to the pipelines for gas transport and also to the flare stack, Sleipner F.

The Sleipner A fixed platform, also known as the carbon dioxide (CO2) platform, is located in the North Sea on Block 15/9. The eight-legged platform weighs 57,000 tons (51,710 tonnes), has 28 wells slots and consists of two units, the hull and the deck. The hull is a gravity base consisting of support pilings and concrete chambers, with four shafts that extend out to support the deck.

On Aug. 23 1991, the Sleipner A platform sank during a controlled ballasting test to check for a minor leakage prior to the deck mounting, and sent the platform to the seafloor bottom in more than 722 feet (220 meters) of water. Norwegian Contractors, which had built the platform, constructed a new platform at an accelerated pace; the second platform was installed on Sleipner East in June 1993.

The Sleipner A platform is an integral part of the project because it receives production from Sleipner East and West, and from satellite fields Gunge, Loke, Alfa North, and Sigyn.

Sigyn is a gas and condensate satellite field located on Block 16/7 in the Norwegian North Sea, roughly 7 miles (12 kilometers) southeast of the Sleipner A platform. ExxonMobil serves as the operator and holds a 40% working interest; Statoil holds the remaining 60% interest.

Receiving governmental approval in August 2001, the field was developed as a subsea tie-back, and consists of two gas/condensate producers and one oil producer. The wellstream is controlled from Sleipner East and is sent through two pipelines to the Sleipner A facility. Sigyn commenced production in December 2002.

Phase 1 B of development focused on developing four additional satellite fields in the Sleipner East section of the project, Loke, Gungne, Volve and Volve South.

The Loke satellite field is tied-back to the Sleipner A platform. Wholly owned and operated by Statoil, Loke received government approval for field development in 1991, and commenced production in 1993.

The Gungne satellite field is also tied-back to the Sleipner A platform. Statoil serves as the operator and owns a 62% interest; ExxonMobil Norge owns 28%; and Total E&P Norge owns the remaining 10%. Gunge was discovered in 1982 and commenced production April 21, 1996.

Phase 2

Phase 2 of development focused on the Sleipner West section of the project.

This phase included installing the Sleipner B wellhead platform, and the Sleipner T gas treatment facility, which is situated on the Sleipner East field. Also, 14 production wells were drilled and tied-back to Sleipner A, B and T, via an 8-mile-long (13-kilometer-long), 20-inch-diameter pipeline. Sleipner B, which is unmanned, is remotely controlled from the A platform. This phase of development commenced production in August 1996.

An important aspect of development concerning Sleipner West is the high carbon dioxide content of the hydrocarbons found in the field. Because of environmental and financial issues, produced CO2 is removed from the well stream on Sleipner T and injected into the Utsira aquifer formation, 2,625 feet (800 meters) below the seafloor of the North Sea.

The separation equipment necessary to perform this task was installed in one of the modules on the Sleipner T platform, while the other facility's module is used for gas processing. For 13 years, the facility has injected and stored more than 11 million tons (10 million tonnes) of CO2 in the reservoir.

After the necessary CO2 extraction from both fields, the gas is transported to the Sleipner A platform and then to the Sleipner Riser platform to be exported.

Phase 3

In 2001, Phase 3 of development began, which focused on maintaining the production of the depleting Sleipner West field. This phase modified the Sleipner T facility in order to lower the inlet pressure.

The Sleipner T platform was converted and upgraded in 2005 to handle the declining Sleipner West reservoir pressure, and continue to produce 777 MMcf (22 MMcm) of natural gas. By doing the upgrade, Sleipner West boosted its recoverable reserves by 158 Bcf (45 Bcm) of gas and 88 million barrels of condensate.

Phase 4

Phase 4 of development focused on the northern part of the Sleipner area, the Alfa North satellite field. By adding the Alfa North satellite field to the project, Sleipner West continues to produce at a substantial rate.

The Alfa North gas field is located on Block 15/9 in the North Sea. Statoil, which owns 59% interest, operates the satellite field; ExxonMobil owns 32%; and Total owns 9% interest.

The field consists of four subsea wells tied-back to the Sleipner T platform via an 11-mile (18-kilometer), 16-inch-diameter pipeline.

Field development of Alfa North began August 2002, and the subsea satellite commenced production on Oct. 11, 2004. Alfa North has estimated recoverable reserves of 45 Bcf (13 Bcm) of gas and 32 million barrels of condensate.

Production

Gas and condensate from Sleipner East are processed at Sleipner T, sent to Sleipner A, and then transported to Emden and Zeebrugge in Belgium. Hydrocarbons from Sleipner West and Gunge are processed on Sleipner A, then transported to Sleipner R. Unstable condensate from Sleipner East and West is mixed at Sleipner A, then sent via pipeline to Karsto, north of Stavanger, for processing.

Sleipner East produces 40,000 barrels of condensate daily and 777 MMcf/d (22 MMcm/d) of gas; Sleipner West produces 55,000 barrels of condensate daily, and 777 MMcf/d (22 MMcm/d) of gas. The Sleipner project as a whole produces 300,000 barrels of condensate daily and 1 Bcf/d (36 MMcm/d). The area should produce until 2023.

Further Development

The drilling and development of several prospects are being evaluated in the area.

Located 34 miles (55 kilometers) north of the Sleipner field in a water depth of 361 feet (110 meters) is the newly discovered Gudrun field. Gudrun is currently under development with plans to drill seven production wells connected to a new fixed processing platform, the Gudrun Platform, and then connecting this infrastructure to existing facilities in the Sleipner area.

The Gudrun field is expected to come online in the first quarter of 2014. Statoil serves as the operator, holding a 46.8% interest; Marathon Oil holds 28.2%; and GDF Suez E&P Norge holds the remaining 25% interest.
Activities
Status Updates
Statoil Reports Production Startup at Gudrun
Type: Production Start

Apr. 2014 - Statoil's Gudrun field is on stream in Norwegian license PL025 making it the company's first operated startup since 2005. Gudrun was discovered in 1975 but the high pressure/high temperature (HPHT) nature of the reservoir posed a significant problem at the time. When the plan of development was submitted in 2010, technology had been developed to enable the exploitation of HPHT reserves and fields had been developed in the area that allowed access to nearby infrastructure with available capacity. Once produced, oil and gas is sent via pipeline from the Gudrun platform to the facilities at Sleipner. Oil is then sent to Karsto while gas is distributed to the European market. Statoil expects to recover 184 MMboe over the life of the field.

Gudrun Reaches Milestone with Topsides Installation
Type: Development Activity

Jul. 2013 - Statoil's Gudrun development reached an important milestone with the installation of the topsides on the platform's jacket which has been installed on location for almost 2 years. Gudrun is located in license PL205 in the Norwegian sector of the North Sea. Platform utilities will now be connected and work can commence towards achieving production in the first quarter of 2014. The project is on track to be completed roughly $334 million below the original investment framework. Recoverable reserves at Gudrun have been estimated at 126.5 MMboe.

Aker Receives Sleipner A and Dagny Modification Work
Type: Operator Update

Feb. 2013 - Aker Solutions received and engineering, procurement, construction, installation and commissioning contract for the tie-in of Dagny gas production to the Sleipner A platform. This is the second call-off project for Aker under the Sleipner Modification Portfolio Agreement. The new project will involve modifications to both the Sleipner A platform and the Dagny platform. Installation is expected to be completed in 2016.

Gudrun Platform Deck Arrives in Norway
Type: Facility Construction

Nov. 2012 - Production from the Statoil-operated Gudrun field in the Norwegian North Sea is expected to begin during 1Q 2014. The company is a step closer to its start-up goal with the arrival of the production platform's deck from Aibel's construction yard in Thailand. The topsides components, which include the operations deck, living quarters, platform modules and helideck, will now be assembled on land. Once complete the unit will be taken via heavy lift vessel to the Gudrun field and attached to the jacket structure which has already been installed. Installation of the deck topsides is expected to take place in the summer of 2013.

PSA Audits Statoil's Compliance During Module Construction for Gudrun
Type: Facility Construction

Jul. 2012 - The Petroleum Safety Authority Norway (PSA) conducted an audit of Statoil's compliance with regulatory requirements during engineering and construction of the wellhead and process modules for the Gudrun facility. The audits were conducted in Asker from May 8-9, 2012 and on the construction site in Thailand from May 14-16, 2012 and focused on electrical systems, instrumentation and technical safety disciplines.

The objective of the audit was to ensure Statoil's compliance with requirements to establish and implement technical and operational barriers. Special emphasis was placed on how Statoil and its partner Aibel, promotes the understanding of interactions between operator, development project, suppliers and operations preparations. Two nonconformities were identified in relation to the system for electrical power supply and for establishment of barrier performance requirements. Improvements were suggested for flame detection and the command structure in the emergency shutdown system.

Technip Grabs Subsea Contracts for Asgard, Gudrun & Valemon Projects
Type: Subsea Equipment

Feb. 2012 - Technip has received two subsea contracts under the Diving Frame Contract from Statoil for the Asgard, Gudrun & Valemon projects. The Asgard contract includes deepwater testing of the Pipeline Repair System, remote hot-tap equipment, preparation work and installation of protection structures. Work will be executed in 2012. The Gudrun and Valemon contract includes installation and tie-in of spools and power cable and also a Morgrip midline tie-in, all performed by divers. The work will be executed in 2013 and 2014.

Statoil Installs Gudrun Jacket
Type: Status Update

Aug. 2011 - Statoil has installed Gudrun’s jacket in the North Sea, completing the first phase of the comprehensive installation work in the field. The company stated that with the jacket solidly positioned on the seabed the company can start drilling in the fourth quarter as planned. The jacket, weighing about 7,000 tonnes, comprises two main structures of almost 2,300 tonnes each, connected by six horizontal frames and bracing. The next stage of development consists of pre-drilling production wells on the field. These will be tied-back to the platform for limited processing for oil and gas export. Final processing of Gudrun’s output will take place on Sleipner A, with the gas piped to the adjacent Sleipner T platform for carbon dioxide removal. The Gudrun field, operated by Statoil, is expected to come online in the first quarter of 2014. Statoil serves as the operator of Gudrun, holding a 65% interest; GDF Suez E&P Norge holds 25%; and Marathon Petroleum Norge holds 10%.

Statoil Gets Consent to Drill Production wells on Gudrun
Type: Status Update

Aug. 2011 - Statoil has received authorization to use the West Epsilon jackup on the Gudrun field for drilling and completing production wells. The field is part of Production License 025, and the plan is to develop the field with a processing facility with integrated living quarters. According to the consent, the drilling period will occur in two phases. The first phase entails drilling through the facility’s steel jacket, and the second phase will occur following installation of the platform deck, scheduled for the summer of 2013. Statoil serves as the operator of Gudrun, holding a 65% interest; GDF Suez E&P Norge holds 25%; and Marathon Petroleum Norge holds 10%.

AGR to Inspect, Certify Statoil's Operations on NCS
Type: Status Update

Jul. 2011 - Statoil granted AGR Field Operations an extension for inspection and certification of non-complex lifting equipment. The services will include Statoil's operations on the Norwegian continental shelf in the North Sea, from Snohvit in the north to Sleipner in the south. The work scope includes 30 offshore installations and four onshore facilities. The duration of this increase is 24 months with an option for a further 24-month period.

Halliburton to Provide Services for Statoil's Gudrun, Brynhild HP/HT Fields
Type: Development Activity

Apr. 2011 - Statoil has awarded Halliburton several contracts to provide services for two high-pressure/high-tempature fields offshore Norway. Halliburton will provide directional drilling, logging-while-drilling, cementing, drilling fluids, and completion equipment and services at the Gudrun and Brynhild fields. Drilling is scheduled to start in the third quarter of 2011. The Gudrun field, operated by Statoil, is expected to come online in the first quarter of 2014. Brynhild is located about 2 miles (three kilometers) east of Gudrun and will be subsea tied-back to the Gudrun/Sigrun installations.

Cameron to Provide HPHT Christmas Trees for Gudrun Platform
Type: Contract Award

Jan. 2011 - Statoil awarded Cameron a contract for the provision of high-temperature, high-pressure surface wellhead and Christmas trees for the Gudrun platform with further options for the Valemon and Brynhild platform developments. The seven-year agreement also includes aftermarket services with the option for two-year extensions continuing through the lifetime of the field. Gudrun, estimated to contain around 127 MMboe, is located in PL 025 in the Norwegian sector of the North Sea. Statoil serves as the operator of Gudrun, holding a 65% interest; GDF Suez E&P Norge holds 25%; and Marathon Petroleum Norge holds 10%.

Statoil Increases its Stake in Gudrun, Eirin
Type: Acreage Acquisition

Dec. 2010 - Statoil has signed an agreement with Marathon to obtain their 20% interest in the North Sea Gudrun project. Statoil will increase its stake in production licenses 025 and 187 from 55% to 75%. The licenses include the Gudrun field, which is currently under development. Production from the Gudrun field should commence in 2014. Statoil also acquired Marathon's 12.5% interest in the nearby Eirin discovery, located in the Sleipner area. The company plans to drill several exploration wells in this area, seeking to add more resources in the axis between Gudrun and Sleiper, stated Statoil.

Apply Leirvik to Construct LQ Module for Gudrun Platform
Type: Facility Construction

Oct. 2010 - Apply Leirvik received an EPC contract from Statoil for the delivery of a living quarter and helideck for the Gudrun platform. The awarded contract includes the delivery of a new module with a capacity of 40 single cabins, an administration center, a central control room and all other necessary facilities required for operation. Planning and design engineering of the module will start immediately and prefabrication of aluminum will commence in March 2011. The module is scheduled for delivery in July 2012. Gudrun, estimated to contain around 127 MMboe, is located in PL 025 in the Norwegian sector of the North Sea. Statoil serves as the operator of Gudrun, holding a 65% interest; GDF Suez E&P Norge holds 25%; and Marathon Petroleum Norge holds 10%.

Aker Awarded Contract for Gudrun Tie-In to Sleipner
Type: Contract Award

Sep. 2010 - Statoil has awarded Aker Solutions two contracts for the Gudrun field development. The contracts are for the tie-in to the Sleipner field; Sleipner will process oil and gas from Gudrun in addition to supplying power to the Gudrun platform. The work will be managed out of Aker Solutions' regional office in Stavanger and will also engage prefabrication resources at its yard in Egersund. Work is scheduled for completion in October 2013. Statoil serves as the operator, holding a 65% interest; GDF Suez E&P Norge holds 25%; and Marathon Petroleum Norge holds 10%.

Statoil Strikes Oil and Gas Near Gudrun
Type: New Discovery

Aug. 2010 - Statoil made an oil and gas discovery in the Brynhild prospect with one exploration well and one technical sidetrack. The well struck oil in a 59-foot (18-meter) column of good reservoir quality in the Draupne formation. The well also encountered a gas and oil column totaling 115 feet (35 meters) of variable reservoir quality in the Hugin formation. It is estimated Brynhild holds between 3 and 19 million barrels of oil equivalent. Statoil plans to assess the discovery and the option of tying the find back to the Gudrun field. The wells were drilled by the Transocean Leader semisub, which will now drill a shallow well to explore the bedrock condition of the Gudrun field. The discovery is located about 2 miles (3 kilometers) east of the Gudrun in the North Sea in PL 187. Statoil serves as the operator, holding a 65% interest; GDF Suez E&P Norge holds 25%; and Marathon Petroleum Norge holds 10%.

Aibel to Build Topsides for Gudrun Platform
Type: Contract Award

Jul. 2010 - Aibel received a US $427.8 million contract from Statoil to build topsides for the new Gudrun production platform. The contract includes engineering and construction of the platform deck and a processing facility for partial treatment of oil and gas. The contract also includes an option for connection and offshore assembly, with related engineering services. Mechanical work is scheduled for completion in March 2013, and in July 2013, the platform should be ready for departure. The Gudrun platform, to be supplied with electricity through a cable from the Sleipner field, will also contain necessary equipment to operate the Sigrun field. Sigrun will be developed as a subsea tie-back to the Gudrun platform, which will then be tied-back to existing facilities in the Sleipner field. Statoil serves as the operator, holding a 46.8% interest; Marathon Oil holds 28.2%; and GDF Suez E&P Norge holds the remaining 25% interest.

Statoil Awards Aker Framework Agreement for Gudrun
Type: Contract Award

Jul. 2010 - Statoil entered into a framework agreement with Aker Solutions to study and modify installations in the Sleipner area of the North Sea. Initially, the agreement covers modifications of the Sleipner A and Sleipner T platforms as part of the Gudrun field development. The contract value is estimated at NOK 900 million, and according to Statoil, the intention of the agreement is to ensure the best possible use of the Sleipner installations for tie-back of new fields in the area. Aker Solutions' framework agreement includes engineering, purchasing, fabricating and installing equipment. Sleipner will process oil and gas from Gudrun as well as supplying power to the Gudrun platform. Gas will be processed on Sleipner A before transported to Sleipner T for carbon dioxide removal. The treated gas will be transported from Sleipner A to the gas markets. Gudrun, estimated to contain around 127 MMboe, is located in PL 025 in which Statoil serves as the operator, holding a 46.8%; Marathon holds a 28.2 %; and GDF holds the remaining 25%.

Statoil Gets Green Light for Gudrun's Development
Type: Status Update

Jun. 2010 - Statoil has received approval from the Norwegian Parliament for Gudrun's plan for development and operation. Production from the field is scheduled to commence in the first quarter of 2014. For a total amount of US $3.56 billion, Gudrun's developmental plan calls for seven production wells to be drilled and connected to a steel production platform and then tied-back to the Sleipner A platform for further processing. On Sleipner, oil and gas from Gudrun will be further processed before the oil is transported to Karsto together with the Sleipner condensate. Carbon dioxide will be separated from the gas before it is exported to Europe via the Gassled system.

Statoil Submits Development Plan for Gudrun Field
Type: Operator Update

Feb. 2010 - Statoil and partners submitted a plan for development and operation (PDO) of the Gudrun field to the Norwegian authorities. For a total amount of US $3.56 billion, Gudrun's developmental plan calls for seven production wells to be drilled and connected to a steel production platform and then tied-back to the Sleipner A platform for further processing. Several contracts will be awarded for the field's development, including construction of the topsides with processing facilities, living quarters, modification work on the Sleipner A facility, heavy lifting and installation, and pipeline fabrication and laying drilling. Production from the field is scheduled to commence in 2014. Discovered in 1974, Gudrun is located in PL 025 in which Statoil serves as the operator, holding a 46.8%; Marathon holds a 28.2 %; and GDF holds the remaining 25%.

Aker To Provide 35th Jacket for Statoil-Operated Gudrun Field
Type: Contract Award

Feb. 2010 - Statoil awarded Aker Solutions an engineering, procurement, and construction contract for the Gudrun field jacket. The contract also includes load-out and sea fastening of the steel jacket and associated piles. Detail engineering starts immediately, with fabrication to commence in July 2010; the jacket is scheduled for delivery in summer 2011. The Gudrun oil and gas field is located 34 miles (55 kilometers) north of the Sleipner field and lies in a water depth of 361 feet (110 meters) in the Norwegian sector of the North Sea. Statoil serves as the operator of the field, holding a 46.8% interest; Marathon holds 28.2%; and GDF Suez E&P Norge holds the remaining 25% interest.

Statoil Strikes Additional Hydrocarbons in Sleipner Area
Type: New Discovery

Nov. 2009 - Statoil has identified another discovery in the Sleipner area, about .9 miles (1.5 kilometers) west of the Sleipner West field and 2.48 miles (4 kilometers) from the Sleipner B platform in the central part of the North Sea. The well, 15/9-B-1, was drilled to prove petroleum in the Middle Jurassic reservoir rocks, as well as to place relevant volumes in production via the Sleipner B platform. Drilling proved gas-condensate in the Hugin formation, and the discovery is estimated to hold between 6 and 10 standard cubic meters of recoverable oil equivalents.

StatoilHydro Gets Go-Ahead to Use Sleipner B
Type: Status Update

Oct. 2009 - StatoilHydro has received consent to use Sleipner B with a waiver of conditions for use of the facility's living quarters module until January 31, 2011. Located in the Sleipner Area in the Norwegian North Sea, Sleipner B is a normally unmanned wellhead facility. During the period up to January 31, 2011, the West Epsilon jackup will be alongside Sleipner B to carry out a drilling campaign on the facility. There will be a gangway connection between the facilities.

StatoilHydro Receives Consent for Use of Volve, Sleipner
Type: Status Update

Jun. 2009 - StatoilHydro was granted consent for the use of Volve, Sleipner Ost and Sleipner Vest with one joint standby vessel. The new joint vessel is operated by ESVAGT AS, and has a speed of 17 knots and is equipped with a daughter craft in addition to a conventional MOB boat. Sleipner West is located on Block 15/6 and 15/9 in the Norwegian North Sea; Sleipner East is on Block 15/9, and Volve is situated on Block 15/9.

StatoilHydro Awards Deepwell Well Service Contracts on NCS
Type: Contract Award

May. 2009 - StatoilHydro awarded Deepwell Norge AS a framework contract for mechanical wireline services for three fields, Statfjord, Snorre and Sleipner, which are located on the Norwegian Continental Shelf in the North Sea. The framework contract is valid for three years, with option periods of two years.

StatoilHydro Unlocks New Hydrocarbon Find at 16/2-5 in North Sea
Type: Appraisal Operations

May. 2009 - StatoilHydro discovered hydrocarbons by an exploration well drilled about 22 miles (35 kilometers) east of the Gudrun field in the Norwegian North Sea. Gas and oil with associated condensate were found in rocks interpreted to be Jurassic or Triassic/Permian. The discovery was drilled by the West Epsilon jackup to a VD of 7,625 feet (2,324 meters), in waters 358 feet (109 meters) deep. It will now be permanently plugged and abandoned.

PSA Gives StatoilHydro Green Light to Drill on Sleipner West
Type: Status Update

May. 2009 - StatoilHydro received consent from PSA to conduct exploration drilling using the West Epsilon jackup on the Sleipner West field. Drilling is expected to commence in June 2009 on wells 15/9-B-1, 15/9-B-2 and 15/9-B-8, with the possibility of a fourth well depending on the drilling rig's schedule. Located on Blocks 15/6 and 15/9, the Sleipner West field is the largest gas field in the Sleipner area, and is situated in a water depth of 361 feet (110 meters).

StatoilHydro Gears Up for Drilling on Volve with Maersk Inspirer
Type: Appraisal Operations

Apr. 2009 - StatoilHydro will use the Maersk Inspirer jackup on the Volve field, located on Block 15/9 in the Norwegian North Sea. The jackup will perform drilling and completion of pilot wells 15/9 F-10 and 15/9-F-10A, as well as production well 15/9-F-10 B. Coming on-stream in February 2008, Volve oil is developed through the Navion Saga oil storage facility, and Volve gas is tied to the Sleipner A platform.

StatoilHydro Chooses Concept for Gudrun Development, Plans New Platform
Type: Development Activity

Jan. 2009 - StatoilHydro and its partners have chosen a development plan for the Gudrun field. Plans are for the platform to be developed as a fixed processing platform with seven production wells and will be tied back to existing facilities in the Sleipner area and the Karsto processing plant north of Stavanger.

Safe Scandinavia Awarded More Time at StatoilHydro's Sleipner
Type: Status Update

Oct. 2008 - Prosafe has been awarded a Letter of Intent for the extension of operations of the Safe Scandinavia at StatoilHydro's Sleipner facility in the Norwegian continental shelf. The duration of the extension is 26 days and has a value of approximately US $9.1 million.

Statoil Makes Find at Gudrun
Type: Appraisal Operations

Mar. 2006 - Oil and gas have been proven on the Gudrun structure in the Sleipner area of the North Sea by Statoil. The results from appraisal well 15/3-8 confirm the estimates of Statoil that the Gudrun structure contains at least 150 million barrels of recoverable oil equivalent.

Statoil Starts New Drilling Operation on Gudrun
Type: Status Update

Nov. 2005 - Statoil has started a new drilling operation on Gudrun in the Sleipner area of the North Sea. Hydrocarbons have previously been proven in the structure.

PSA Grants Consent for Exploration Well on Gudrun
Type: Appraisal Operations

Jul. 2005 - The Petroleum Safety Authority Norway (PSA) has granted its consent to Statoil for exploration drilling with the Transocean Leader for well 15/3-8, on the Gudrun field in the North Sea.

Tap Oil Spuds Gudrun-2 Well
Type: Appraisal Operations

Jan. 2004 - Tap Oil reports that the Gudrun-2 development well spudded earlier this week. The well is being drilled from the Harriet Alpha Platform in TL/1, offshore Australia, and is planned to intersect the reservoir section within the Gudrun Field at a location 3.4 kilometers to the south.

Hydrocarbons Found at Gudrun
Type: Appraisal Operations

Aug. 2001 - Statoil has proven hydrocarbons in an exploration and appraisal well in the Gudrun structure in the Sleipner area of the North Sea. Well 15/3-7 was drilled in the eastern section of the structure. Hydrocarbons were encountered in Middle and Upper Jurassic sandstone intervals. The well was not production tested, but core samples were retrieved and extensive information was collected.

Statoil Drilling Appraisal Well on Gudrun Field
Type: Appraisal Operations

May. 2001 - Smedvig Offshore's semisubmersible, West Alpha, has started drilling an exploration and appraisal well on the Gudrun field in the North Sea.

Gudrun Platform
Producing - Apr 2014 to -

Under Construction - 2009 to Apr 2014

The platform is to be developed as a fixed processing platform with seven production wells and will be tied back to existing facilities in the Sleipner area and the Kårstø processing plant north of Stavanger.

Alpha North
Producing - Oct 11, 2004 to -

The subsea satellite field commenced production Oct. 11, 2004.

Under Development - Aug 2002 to Oct 2004

Sleipner T
Producing - Aug 29, 1996 to -

Sleipner B
Producing - Aug 1996 to -

Loke
Producing - 1993 to -

Loke commenced production in 1993.

Sleipner A
Producing - Aug 24, 1993 to -

Under Construction - Dec 15, 1986 to Aug 23, 1993

The field has been developed with an integrated processing, drilling and accommodation facility with a concrete jacket, Sleipner A.

Gungne
Producing - Apr 21, 1996 to -

Under Development - Aug 29, 1995 to Apr 20, 1996

Discovery (Appraised) - Jun 02, 1994 to Aug 28, 1995

Appraisal Drilling - Feb 16, 1994 to Jun 01, 1994

Discovery (Drilled) - Aug 02, 1982 to Feb 15, 1994

Exploratory Drilling - May 28, 1982 to Aug 01, 1982

Sleipner East
Producing - Jun 06, 1998 to -

Under Development - Dec 15, 1986 to Aug 23, 1993

The field has been developed with an integrated processing, drilling and accommodation facility with a concrete jacket, Sleipner A. A separate riser facility has also been built, Sleipner R, which is bridge connected to Sleipner A.

Discovery (Appraised) - Aug 25, 1982 to Dec 14, 1986

Appraisal wells 15/9-11, 13, 16 were plugged and abandoned as gas/condensate discoveries.

Appraisal Drilling - Sep 18, 1981 to Aug 24, 1982

3 appraisal wells were drilled during this period: 15/9-11, 13, 16.

Discovery (Drilled) - Jul 15, 1981 to Sep 17, 1981

Exploratory Drilling - May 04, 1981 to Jul 14, 1981

Gudrun
Producing - Apr 2014 to -

Under Development - Sep 2010 to Apr 2014

Discovery (Appraised) - Apr 12, 2006 to Sep 2010

Appraisal well 15/3-8 was drilled to TD at 4592 m in Late Jurassic Intra-Draupne Formation sandstone. The well was permanently abandoned on 11 April 2006 as an oil and gas appraisal well.

Appraisal Drilling - Nov 03, 2005 to Apr 11, 2006

Appraisal well 15/3-8 drilled by the Transocean Leader.

Discovery (Appraised) - Sep 02, 2001 to Nov 02, 2005

Appraisal well 15/3-7 was drilled to TD at 4818 m, 211 meters into the Middle Jurassic Hugin Formation. No shallow gas was observed. The well was permanently abandoned on as a dry well.

Appraisal Drilling - Apr 26, 2001 to Sep 01, 2001

Appraisal well 15/3-7 drilled by Seadrill's West Alpha.

Discovery (Appraised) - Aug 10, 1979 to Apr 25, 2001

Appraisal Drilling - Jan 05, 1979 to Aug 09, 1979

Appraisal well 15/3-3 drilled by the Pentagone 84.

Discovery (Drilled) - Jun 08, 1975 to Jan 04, 1979

Well 15/3-1 was drilled to a total depth of 5132 meters penetrating the Middle Jurassic age

Exploratory Drilling - Nov 27, 1974 to Jun 07, 1975

exploration well 15/3-1 drilled by the Deepsea Driller now known as the Byford Dolfin.

Sleipner West
Producing - Aug 29, 1996 to -

Under Development - Dec 14, 1992 to Aug 29, 1996

The field is developed with a wellhead facility, Sleipner B, which is remotely operated from Sleipner A on the Sleipner Øst field, and a processing facility, Sleipner T, which is bridge connected to Sleipner A.

Discovery (Appraised) - Jun 10, 1982 to Dec 13, 1992

Appraisal Drilling - Feb 24, 1977 to Jun 09, 1982

Several appraisal wells were drilled during this period.

Discovery (Drilled) - Dec 20, 1974 to Feb 23, 1977

Wildcat well 15/6-3 was abandoned as a gas and condensate discovery.

Exploratory Drilling - Sep 05, 1974 to Dec 19, 1974

Wildcat well 15/6-3 was drilled to a total depth of 3795 m into the Late Triassic formation.

Update History
The SubseaIQ Team works everyday to provide you with the latest information on the offshore field development market. The following table provides you with a detailed record of each addition and update made to this project by the SubseaIQ team.
UPDATE TYPE DATE DAYS AGO
Facility Updated Apr 10, 2014 14
Field Updated Apr 10, 2014 14
Field Status Updated Apr 10, 2014 14
Field Status Added Apr 10, 2014 14
Facility Status Updated Apr 10, 2014 14
Facility Status Added Apr 10, 2014 14
Activity Added Apr 10, 2014 14
Field Updated Oct 31, 2013 175
Facility Updated Oct 31, 2013 175
Field Updated Jul 19, 2013 279
Activity Added Jul 19, 2013 279
Facility Updated Feb 01, 2013 447
Activity Added Feb 01, 2013 447
Field Updated Nov 16, 2012 524
Activity Added Nov 16, 2012 524
Facility Updated Nov 16, 2012 524
Facility Updated Aug 21, 2012 611
Facility Updated Jul 06, 2012 657
Activity Added Jul 06, 2012 657
Field Updated Feb 29, 2012 785
Activity Added Feb 29, 2012 785
Field Updated Aug 15, 2011 983
Project Description Updated Aug 15, 2011 983
Activity Added Aug 03, 2011 995
Activity Added Jul 14, 2011 1015
Project Description Updated Jun 23, 2011 1036
Activity Added Apr 06, 2011 1114
Field Updated Apr 06, 2011 1114
Project Description Updated Feb 24, 2011 1155
Activity Added Jan 20, 2011 1190
Field Updated Jan 20, 2011 1190
Activity Added Dec 16, 2010 1225
Activity Added Oct 06, 2010 1296
Field Updated Oct 06, 2010 1296
Field Status Updated Oct 06, 2010 1296
Field Status Added Oct 06, 2010 1296
Field Updated Sep 20, 2010 1312
Activity Added Sep 20, 2010 1312
Activity Added Aug 19, 2010 1344
Activity Added Jul 20, 2010 1374
Field Updated Jul 20, 2010 1374
Field Updated Jul 14, 2010 1380
Activity Added Jul 14, 2010 1380
Project Description Updated Jun 25, 2010 1399
Activity Added Jun 17, 2010 1407
Field Updated Jun 17, 2010 1407
Project Description Updated May 24, 2010 1431
Project Description Updated Mar 16, 2010 1500
Field Updated Feb 25, 2010 1519
Activity Added Feb 19, 2010 1525
Project Description Updated Feb 18, 2010 1526
Activity Added Feb 18, 2010 1526
Project Description Updated Feb 08, 2010 1536
Project Description Updated Feb 05, 2010 1539
Activity Added Nov 16, 2009 1620
Activity Added Oct 22, 2009 1645
Activity Added Jun 17, 2009 1772
Field Updated Jun 03, 2009 1786
Facility Updated Jun 03, 2009 1786
Activity Added May 29, 2009 1791
Activity Added May 13, 2009 1807
Facility Added May 13, 2009 1807
Field Updated May 13, 2009 1807
Facility Status Added May 13, 2009 1807
Activity Added Apr 09, 2009 1841
Project Description Added Feb 23, 2009 1886
Field Added Feb 23, 2009 1886
Field Status Added Feb 23, 2009 1886
Facility Added Feb 23, 2009 1886
Facility Status Added Feb 23, 2009 1886
Field Updated Feb 11, 2009 1898
Activity Added Jan 22, 2009 1918
Field Added Jan 20, 2009 1920
Field Status Added Jan 20, 2009 1920
Activity Added Oct 22, 2008 2010
Field Added Jun 10, 2008 2144
Field Status Added Jun 10, 2008 2144
Field Status Added Jun 09, 2008 2145
Field Added Jun 09, 2008 2145
Facility Status Added Jun 05, 2008 2149
Facility Added Jun 05, 2008 2149
Activity Added Mar 27, 2006 2950
Activity Added Nov 03, 2005 3094
Activity Added Jul 05, 2005 3215
Activity Added Jan 22, 2004 3745
Activity Added Aug 28, 2001 4622
Activity Added May 11, 2001 4731

    Project Update History Search - View all the lastest updates made by the SubseaIQ team.
 
Project Map
Project Image
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Facility Name Gudrun Platform
Duty Oil/Gas
Operator Statoil
Current Status Producing since 2014
Host Type Fixed Platform
Water Depth 110 m / 363 ft
Dev.Cost n/a
 
Region Norway
 
Location 15/3
Facility Name Sleipner A
Duty Oil
Operator Statoil
Current Status Producing since 1993
Host Type Fixed Platform
Water Depth 80 m / 264 ft
Dev.Cost n/a
 
Region Norway
 
Location 15/9
Facility Name Sleipner B
Duty Gas
Operator Statoil
Current Status Producing since 1996
Host Type Fixed Platform
Water Depth n/a
Dev.Cost n/a
 
Region Norway
 
Location 15/9
Facility Name Sleipner T
Duty Gas
Operator Statoil
Current Status Producing since 1996
Host Type Fixed Platform
Water Depth n/a
Dev.Cost n/a
 
Region Norway
 
Location 15/9
 
Field Name Sleipner West
Discovery Date Dec 1974
Block 15/6, 15/9
Reserve Type Oil/Gas
Current Status Producing
Production Start Aug 1996
Water Depth 110 m / 363 ft
Field Name Sleipner East
Discovery Date Jul 1981
Block 15/9
Reserve Type Gas
Current Status Producing
Production Start Jun 1998
Water Depth 82 m / 271 ft
Field Name Gungne
Discovery Date Aug 1982
Block 15/9
Reserve Type Gas
Current Status Producing
Production Start Apr 1996
Water Depth 83 m / 274 ft
Field Name Loke
Discovery Date
Block 15/9
Reserve Type Gas
Current Status Producing
Production Start Jan 1993
Water Depth n/a
Field Name Alpha North
Discovery Date
Block 15/9
Reserve Type Gas
Current Status Producing
Production Start Oct 2004
Water Depth n/a
Field Name Gudrun
Discovery Date Jun 1975
Block PL025, 15/3
Reserve Type Oil/Gas
Current Status Producing
Production Start Apr 2014
Water Depth 109 m / 360 ft